python - 类型错误 : cannot concatenate a ninNDFrame object while trying to concat

Question

enter image description here这是我的代码，我尝试在 axis=0 上连接或附加，但收到此错误。所有列都相同，甚至数据类型也相同。

尽管在执行 pd.read_csv() 时，我必须指定 encoding=ISO-8859-1您认为这可能是原因吗？虽然类型是数据框

declinedataforclassification=declinedata[['amount_requested','Risk_Score','dti','State','emp_length','policy_code','app_month']]
loandataforclassification=loandata[['loan_amnt','Risk_Score','dti','addr_state','emp_length','policy_code','issue_month']]
loandataforclassification=loandataforclassification.rename(columns={'loan_amnt':'amount_requested','addr_state':'State','issue_month':'app_month'})
declinedataforclassification['status']=0
loandataforclassification['status']=1
loandataforclassification['amount_requested']=loandataforclassification['amount_requested'].astype(float)

resultdata = loandataforclassification.append('declinedataforclassification',ignore_index=True)

Answer 1

resultdata = loandataforclassification.append(declinedataforclassification,ignore_index=True)

应该适合你。您现在正尝试将字符串附加到数据框。